Fruit and vegetable products — Determination of zinc content — Part 3: Dithizone spectrometric method
NORMA vydaná dňa 1.12.1983
Označenie normy: ISO 6636-3:1983
Dátum vydania normy: 1.12.1983
Počet strán: 3
Približná hmotnosť: 9 g (0.02 libier)
Krajina: Medzinárodná technická norma
Kategória: Technické normy ISO
Description / Abstract: The method consists in decomposing of organic matter, neutralizing of the solution obtained, adding of 1,5-diphenylthiocabazone solution, extracting of the zinc complex thus furmed with chloroform and measuring of the absorbance of the extract at a wavelength of 538 nm.